Ok, it appears that this is an intergrated graphics card, if I'm honest I dont really have much experience with them as I always recommend using a separate card if you need to play games.

But still if it has worked in the past then maybe updating the driver will help a little, so what we need to do now is find the manufacturer of your computer. I know Dell have used these alot in the past, any chance yours is a dell? If it is then its just a case of going to the Dell site, clicking support, selecting your model and then finding the updates for this chipset.

If you get stuck at any point just post back and we will try to sort it out.